Measuring device



` l. DUPLESSIE.

M'EAsunlNG nEvfcE.

APPLICAIION FILED NOV. l5. T919.

l 1,382 ,7 1 7 Patented June 28, 1921.

30 INVENTOR 18 UNITED STATESv MEasiiEING DEVICE.. j l f' Specification of Letters Patent.

Patented June 287 1921.

Application filed November 15, 1919. 'Serial No. 338,162.

' To @ZZ whom t may concern Be it known that I, JosErH DUPLEssiE, a citizen'of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented new and useful Improvements in Measuring Devices, of which the followingis a specification.

This invention relates to measuring devices aiid more particularly, -it consists of adevice for'determining and testing angles and for gaging radii.

Some of the objects of the invention are: toy produce a device which embodies the use of a sine bar and4 radii gages in conjunction with a single supporting base member; to produce a device with which to accomplish hitherto unachieved advantageous results, in that the sine bar thereof, has la wider range'of adjustment and in' that the sine bar yis of novel formation; to produce a device'k of the character herein disclosed,

with which to effectually obtain differentl .and desired results hitherto accomplished by separate tools. With these and other objects in view the invention resides'in the particular provision and combination 'of parts described more fully in the following specification and illustrated in the accompanying drawings in which:

Figure 1 is a side elevation of the complete device.

v Fig.' 2 is a plain view thereof. l

Figs. 3 and 4; areend elevations of opposite ends of the device.

Fig. v5` is a diagrammaticvview, illustratingthe procedure of, ascertaining the angle ofthe sine bar in a given case.Y

Referring now to the drawing it will be seen, that the device comprises a supporting base, member 10 to which is pivoted a bracket 11. A threaded bolt 12, in assembling the bracket 11 with the base 10 eX- teiidsthrough an aperture 13 in one end of the bracket 11 and threads in a threaded aperture 14 in the base member 10, there being a plurality lof such threaded apertures 14, in the base member 10. The freeV end of the bracket 11 is adapted to carry a radius gage 15. The said gage 15 is beveled as at 16 and is secured to the free end of the bracket 11 by a screw 17. It is to be understood, that the radius gage l15 shown in the drawing is for gaging a partculer radius and is Only one @f a number of similar gages to be used for gaging and testing many radii. The bottom face of the base member 10 is. grooved as at 18, particularlyadapting the device as a radius gage, in that the base member 10 may be properly seated uponV a shaft or spindle which carries the work, the concaved, circular or rounded formation of whose parts are vto be gaged or tested.

In order that the device may be used for determining or testing angles, the base member 10 carries a bracket 19. In this particular instance the bracket is of L shape to provide portions 2O and 21. The portion 20 of the bracket is providedl with apertures 22 any one of which may receive the plain portion of a threaded bolt 23 so that the bracket as assembled with the base member l0, will have pivotal movement with relation thereto. The bolt 23 is provided with a head 24 to securely hold the bracket 19 in different positions of adjustment with relation to the base member 10. The portion 21 of the bracket 19 is offset with respect to the portion 2O and it isslotted as at 25. A sine bar26 is carriedby the portion 21 ofthe bracket 19.v The sine bar is provided with a plurality' of screw threaded apertures 27 any one of which may receive the threaded portion of a bolt 28 which eX- tends through the slot 25, the bolt being provided with a head 29 which serves to holdl the sine bar 26 'clamped in different positions of adjustment with respect to the bracket 19 and obviously with respect to the bOttQm faceg30 of the`base member'lO.

The sine bar is vprovided with sine buttons 3 1, and32 which" are ofprime importance for ascertainingl the degreey of 'angle to be obtained for carrying out a piece of work. One side edgeof the sine'bar 26 isbeveled as at' 33. The 4beveled feature of the sine bar is highly desirable, in that it will not shut out light while testing finished surfaces of work, nor will it obscure any mark that is being worked by as a guide for carrying out a piece of work. j

Forisetting the sine bar and for determining the degree of angle at which the s ine bar is disposed the following procedure is followed The bolt 28 or both the bolt 28 vand the bolt 23 maybe loosened so that the bracket 19 as well as the sine bar 26 may be moved to bring lthe sine bar to approximately the JOSEPH DUDDESSIE. orv PBDVIDENCE, RHODE ISLAND.

desired angle. The sine bar 26 and bracket 19 are then temporarily clamped in their new positions. Now, for nstance,were we to obtain an angle for the beveled edge of the sine bar 26 of 80 27, it would -be found then, by using measuring blocks or a height gage that the distance between the bottom face of the sine button 32 and a line X coincident with the plane of the face 30 would be .500, and the distance of .the bottom face'of the sine button 31 to the `line X would be 2.02037 the distance between the centers of kthe sine buttons 31 1 yand 32 as taken in Fig. 2 would bev 3". To

the distance the bottom-face of sine button 31 must measure fromV line X, to have the edge86 of the sine bar disposed at 30? 27.

vInorderthat the devicemay be used as a square base member 10, is so constructed that the upper face 34 thereof is in parallelism with theface30. One endv face 35 kof r the sine bar 26 is disposed precisely at a right angle tothe beveled edge 36V of the sine bar. It will therefore be understood that when the edge 35 of thejsine bar is confronted by the edge 34 of the base member r 10, the ysine bar will seat itself thereupon so that the edge 36 of the sine bar will be disposed at 90 with respect to the disposition of face 130 ofthe base-member 10. lWhat is'claimed as new is 1. In'combination with a supporting base member having agroove in the bottom face thereof, la Vbracket Vpivoted `to said base,la sinebar having sine-buttons and a beveled edge pivoted to said bracket, means for holding ,the bracket indifferent positions relative'to said base andim'eans -for holding I the sine bar in different positions relative to the bracket. Y

2. In combination with a base member having a groove in one of its faces and two of its faces in parallelism, a bracket pivotedV 0f a beveled-edge to said base, a sine bar havin at right angles and one face thereof disposed to said beveled edge pivoted to said bracket,

`means for holding the bracket in different positions relative to said base and means for holding the sine bar in different positions relative to the bracket.

3. A device of the class described, including a base member, a slotted bracket pivoted tol said base, a sine bar having a threaded aperture therein. a threaded pivot bolt vadapted to extend through the slot in said bracket and to thread inthe aperture in said sine bar, a clamp nut on said bolt, and sine buttons on said sine bar disposed to lieuon `opposite sides of said bolt.

4L. VA device lof the class described, including a base member having threaded aperltures therein, a bracket having differently disposed portions, an yaperture in one of saidportions and a slot in the other of said portions, a threaded pivot bolt adapted to .extend through the aperturein one of said ybracket portions and to thread inofne ofthe threaded apertures in the base member, a

,clamp nut on said bolt, a sine bar having threaded apertures therein and sine buttons portions and lto thread in an aperture in the sine bar.

Y 5. A device of the class described includadV ing a base member having a groove in lthe bottomface thereof, a bracket pivoted to said base, means for vholding the bracket in different positions relative to said base, a sinebar havinga beveled edge adjustably and Vpivotallyl mounted on said bracket,

AYmeans for holding vthe sinebar in different positions relative to said `bracket and sine buttons on said sinebar. .Y

Vl'ntestimony whereofI-have aiXed my signature. f

. A;iosnrnnuriaispsin.v

thereon, a .pivot boltl adapted to Aextend lthrough the slot in the other of said bracket 

